public class IrregularArray {
  public static void main(String[] args) {
     int[][] arr = new int[2][];
     arr[0] = new int[] {1,2,3,4,5};
     arr[1] = new int[] {1,2,3};
     for(int[] row : arr) {
       for(int value : row) {
          System.out.printf("%2d",value);
       }
       System.out.println();
     }
  }
}

